Methyl α- and β-D-galactopyranosides and 4-O-β-D-galactopyranosyl-3,6-anhydro-L-galactose dimethylacetal were sulfated with sulfuric acid and dicyclohexylcarbodi-imide as a condensation reagent. The sulfated sugars were isolated by ion-exchange chromatography, characterized, and assigned by methylation analyses. On the basis of the yield of each sulfated product that was isolated, sulfation on O-6 appeared to be predominant.
甲基α-和β-
D-半乳糖吡喃苷及4-O-β-
D-半乳糖吡喃苷-3,6-去
水-L-半
乳糖二甲基
缩醛在
硫酸和二环己基碳二
亚胺的作用下进行了
硫酸化。
硫酸化的糖通过离子交换色谱法分离,进行了表征,并通过甲基化分析进行了鉴定。根据分离出的每种
硫酸化产物的产率,O-6上的
硫酸化似乎占主导地位。